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Arctic swimmer Lewis Pugh: 'I've never come so close to the end'

Lewis Pugh undertook a perilous swim to raise awareness about the threat to the Arctic - he says it almost killed him.

By Lewis Pugh, Arctic Swimmer

Sky worked with Lewis Pugh during the filming of the Arctic Peril documentary. Mr Pugh swam one kilometre along the Arctic ice edge in water that was -0.7 degrees. Here, in his own words he explains how close he came to dying.